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chisam14
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Joined: 22-October 07
Profile Views: 202*
Last Seen: 7th November 2007 - 08:48 PM
Local Time: Nov 21 2008, 07:57 AM
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7 Nov 2007
I have two single phase, 120V motors in parallel. One is a 3/4 hp(10.4A) and the other is a 1/4hp(4A). I need to know what size capacitor to put in parallel with them to help aid power factor. The cap will be controlled by a microprocessor. If anyone knows the size or formulas for calculating the size please let me know.
22 Oct 2007
I am designing a circuit to demonstrate the effects of capacitors on the power factor. I have a couple different single-phase motors (120V) that will manually be switched on. I have a relay to engage the capacitors when the power factor drops below a certain level. I have everything so far that I need for the demonstration but I can not figure out a way to have a device measure the power factor and energize/de-energize my relay to turn on my cap bank. If anyone could help with this it would be greatly appreciated
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Lo-Fi Version | Time is now: 21st November 2008 - 12:57 PM |
23 Oct 2007 - 5:05